若(x+y)/3=(y+z)/5=(8+z)/4,且xyz≠0,求x∶y∶z.
已知:(x+y-z)/z=(x-y+z)/y+(y+z-x)/x,且xyz≠0,求代数式[(x+y)(y+z)(x+z)
若xyz≠0,且x分之y+x=y分之z+x=z分之x+y,求xyz分之(y+z)(z+x)(x+y)的值
已知x+y-z/z=x-y+z/y=-x+y+z/x,且xyz不等于0,求分式[(x+y)(x+z)(y+z)]/xyz
若xyz不等于0,且满足(y+z)/x=(x+z)/y=(x+y)/z,求(y+z)(x+z)(x+y)/xyz的值
若xyz不等于0,且(y+z)/x=(z+x)/y=(x+y)/z,求(y+z)(z+x)(x+y)/xyz的值?
已知2X+5Y+4Z=0,3X+Y-7Z=0,且XYZ不等于0,求(X+Y+Z)/(2X-3Y+4Z)的值
若xy-z不等于0,且(y+x)/x=(z+x)/y=(y+x)/z,求[(y+z)(z+x)(x+y)]/xyz的值?
已知3/x+y=4/x+y=5/y+z,求xyz/(x+y)(y+z)(z+x)的值
已知4x-5y+2z=0,且x+4y-3z=0,(xyz不等于0)试求x/y
已知x+y-7z=0 x-2y+5z=0(xyz不等于0),求x+2y-z/y-2x+12z
已知方程组4X-3y-3Z=0,X-3y+Z=0,(XyZ≠0),求X:y:Z的值.
已知一方程组:x-3y+7z=0与x-2y+4z=0(xyz≠0),求x:y:z.